diff --git a/docs/Instruction/tips/markdown_In-page_links.md b/docs/Instruction/tips/markdown_In-page_links.md
new file mode 100644
index 0000000000000000000000000000000000000000..655ab5ac555584d727fe6179d2619ff746aa5461
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+++ b/docs/Instruction/tips/markdown_In-page_links.md
@@ -0,0 +1,78 @@
+# In-page links
+
+# Title
+
+[go to Title](#title)  
+// Capital letter -> small letter
+
+
+## sharpx2
+
+[got to sharpx2](#sharpx2)  
+// always use one "#" even deeper index
+
+### include blank index
+
+[go to include blank index](#include-blank-index)  
+// blank -> ""-""
+
+#### abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456
+
+[go to abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456](#abc_def123-456)  
+//ignore except alphabet, number, a"_" and "-"
+
+
+
+```
+# Title
+
+[go to Title](#title)
+// Capital letter -> small letter
+
+
+## sharpx2
+
+[got to sharpx2](#sharpx2)
+// always use one "#" even deeper index
+
+### include blank index
+
+[go to include blank index](#include-blank-index)
+// blank -> ""-""
+
+#### abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456
+
+[go to abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456](#abc_def123-456)
+//ignore except alphabet, number, a"_" and "-"
+
+```
+
+Ref.[here](https://qiita.com/hennin/items/7ee58dd7d7c013a23be7#%E5%90%8C%E3%81%98%E3%83%98%E3%83%83%E3%83%80%E3%83%BC)
+
+-----
+# Links
+
+```
+[text](path/to/link)
+// normal syntax
+
+[text][1]
+[1]:path/to/link
+// other link syntax
+
+![](path/to/image.jpg)
+// normal syntax
+
+![image][]
+[image]: path/to/image.jpg "text"
+// other image syntax
+
+![image][1]
+![image][2]
+![image][3]
+[1]: path/to/image1.jpg "text"
+[2]: path/to/image2.jpg "text"
+[3]: path/to/image3.jpg "text"
+// Use ID
+
+```
diff --git a/docs/Instruction/tips_list.md b/docs/Instruction/tips_list.md
index a6d8abd51f7c0a5dd737b8ab0c77b7e66e3bcaea..10e6eb77305d9b1647c9bd9d295727058a3ea6c5 100644
--- a/docs/Instruction/tips_list.md
+++ b/docs/Instruction/tips_list.md
@@ -14,6 +14,7 @@
 - [FA2022 Embedded Programming Environment](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips/fa2022_embed_env/)
 
 - [FA2022 USB-D11C-serial (Pi3 + OpenOCD)](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips/fa2022_usbserial_pi3_openocd/)
+    - [Program SAMD11C_serial.ino](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips/fa2022_usbserial_pi3_openocd#on-mac-terminal) 
 
 - [FA2022 USB-D11C-serial (Pi4 + Ubuntu + edbg + Xiao)](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips/FA2022%20usbserial_Pi4_edbg/)